1981

1.0

1986

6.7

1985

7.2

2004

6.3

2019

4.5

2009

9.8

1959

7.9

1972

6.2

1955

7.9

1951

7.7

2017

0.0

1957

5.5

2016

4.3

1973

7.5

2010

0.0

1992

6.2

1966

5.9

1980

6.1

2001

6.5

2001

1.0